Atomic
An encapsulation of an atomic primitive object.
atomics.swift:190This declaration is deprecated: please use ManagedAtomic from https://github.com/apple/swift-atomics instead
final class Atomic<T> where T : AtomicPrimitiveAtomic objects support a wide range of atomic operations:
Compare and swap
Add
Subtract
Exchange
Load current value
Store current value
Atomic primitives are useful when building constructs that need to communicate or cooperate across multiple threads. In the case of SwiftNIO this usually involves communicating across multiple event loops.
By necessity, all atomic values are references: after all, it makes no sense to talk about managing an atomic value when each time it’s modified the thread that modified it gets a local copy!
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Type members
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init(value: T) Create an atomic object with
value.
Instance members
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func add(T) -> T Atomically adds
rhsto this object.func compareAndExchange(expected: T, desired: T) -> Bool Atomically compares the value against
expectedand, if they are equal, replaces the value withdesired.func exchange(with: T) -> T Atomically exchanges
valuefor the current value of this object.func load() -> T Atomically loads and returns the value of this object.
func store(T) Atomically replaces the value of this object with
value.func sub(T) -> T Atomically subtracts
rhsfrom this object.
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where T:AtomicPrimitive, T:SendableConformances
protocol SendableA type whose values can safely be passed across concurrency domains by copying.